FINERACT-1971: added automation tests for repayment schedules with la…

…rge charge amounts

fineract-e2e-tests-core/src/test/java/org/apache/fineract/test/helper/Utils.java

@@ -49,13 +49,21 @@ public static LocalDate now() {
         return LocalDate.now(Clock.systemUTC());
     }
 
+    /**
+     * A record that formats a double value based on whether it's a whole number or not.
+     * <p>
+     * If the value is a whole number, the output will have one decimal place (e.g., 16.0). Otherwise, it will have two
+     * decimal places (e.g., 16.90), but if the second decimal place is zero, it will be removed (so 16.90 becomes
+     * 16.9).
+     */
     public record DoubleFormatter(double value) {
 
         public String format() {
             boolean isWholeNumber = (value % 1.0 == 0);
 
             String result = isWholeNumber ? String.format("%.1f", value) : String.format("%.2f", value);
 
+            // For non-whole numbers, remove trailing '0' if it exists
             if (!isWholeNumber && result.endsWith("0")) {
                 result = result.substring(0, result.length() - 1);
             }